Matthew 16:9

“Do ye not understand, etc.] Meaning either the sense of the advice he had now given; or rather his almighty power displayed in the two miracles of feeding five thousand at one time, and four thousand at another, with a very small quantity of provision; for to this the word “understand” refers, as well as the following: neither remember the five loaves of the five thousand, and how many baskets ye took up? Have you forgot what was so lately done, namely, the feeding five thousand men, besides women and children, with five loaves and two fishes, when ye took up, after all were filled and satisfied, no less than twelve baskets of fragments? And can you, after this, distrust my power in the care…”

“The account in these verses is also recorded in Mark 8:13-21. Matthew 16:5 And when his disciples were come to the other side - That is, to the other side of the Sea of Galilee. Mark says that he entered into a ship again, and departed to the other side. The conversation with the Pharisees and Sadducees had been on the western side of the Sea of Galilee. See the notes at Matthew 15:39. They crossed from that side again to the east. Had forgotten to take bread - That is, had forgotten to lay in a sufficient supply. They had, it seems, not more than one loaf, Mark 8:14. Matthew 16:6-11 Take heed ... - That is, be cautious, be on your guard. The leaven of the Pharisees and Sadducees - Leaven is…”

“16:9-10 Jesus had demonstrated to his disciples that he is the true bread of life (15:32-39; John 6:35, 48), whereas the Jewish leaders, particularly in their teachings, were like yeast in permeating everything they touched with their sinfulness (see study note on Matt 16:11-12).”

“ye not: Mat 15:16, Mat 15:17; Mar 7:18; Luk 24:25-27; Rev 3:19 the five loaves: Mat 14:17-21; Mar 6:38-44; Luk 9:13-17; Joh 6:9-13 Matthew 16:10”